FODMAP food guide
Is rye bread low FODMAP?
FODMAP score
75
High FODMAP
No — Rye Bread is high FODMAP and is a common trigger for IBS symptoms in typical servings.
FODMAPs present
Low-FODMAP serving
1 thin slice of rye sourdough only
Becomes high FODMAP at
2 slices (about 52g+)
Rye is high in fructans; only thin slices of well-fermented rye sourdough are tolerated by some.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores rye bread at a serving of 1 thin slice of rye sourdough only; at 2 slices (about 52g+) it belongs in the high band. A source quoting the larger serve will call it high, and one quoting the smaller will call it low — the same food, measured at two different amounts.
Based on published FODMAP research and reviewed reference data. Informational only — not medical advice. Tolerance is individual; verify with a dietitian during the elimination phase.
Go deeper
Related foods — gentlest first
Green scores are the real swaps; matching numbers are just relatives, not alternatives.